docs: def clean_points(points):
      """
      Given a list of :class:`~openquake.hazardlib.geo.point.Point` objects,
      return a new list with adjacent duplicate points removed.
      """
      if not points:
          return points
  
      result = [points[0]]
      for point in points:
          if point != result[-1]:
              result.append(point)
      return result